Material Engineering Quiz

What is the main focus of material engineering?

• How new material behaves

• How to design material with desirable properties and performance

• How material structure determines material properties

• How to increase the types of materials

Which is NOT a primary interatomic bond?

• ionic bond

• covalent bond

• metallic bond

• hydrogen bond

What is an example of solid with ionic bond?

• Aluminum

• Stainless steel

• Potassium bromide (KBr)

• Polycaprolactone (-(CH2)5-COO-)n

What is NOT a feature of covalent bond?

• One atom completely gives up its valence electrons to another atom

• This bond is directional

• This bond also exists in other molecules besides organic compounds

• All of the above

What is a CORRECT meaning of the term biocompatibility?

• The ability to blend in with natural surroundings

• The ability to mimic biological functions

• The ability to interact with living systems without causing harm

• The ability to replicate tissue anatomy

Which is a CORRECT example of second-generation biomaterials?

• Hip joint prosthesis coated with vitamin E as an antioxidant

• Artificial blood vessel made by poly(ethylene terephthalate)

• Suture made by nylon

• Dental crown made by zirconia

What is FALSE about third-generation biomaterials?

• they serve as artificial tissues

• they require the use of a long-lasting, non-degradable material(s)

• they require the use of living cells

• they are aimed to be implanted inside the patient body.

Which is a CORRECT example of physical requirement of biomaterials?

• Materials for hip joint prosthesis should be flexible and easy to deform under stress

• Materials for knee cartilage should be hard, stiff and rigid

• Materials for intraocular lens should allow light to pass through

• Materials for bone plate should be easily degradable

Which of the following statement about metals is FALSE?

• Metallic atoms are orderly arranged

• Most metals are ductile and malleable

• All metals are reactive as electron donors

• All metals can resist corrosion

Compared to ceramics and polymers, one of the advantages of metals is ________.

• higher electrical conductivity

• lower resistance to fracture

• lower stiffness

• lower density